Mortal Kombat Deadly AllianceHidden CharacterPortrayed by John TurkUnlockable via coffin in console versions. Hidden character in the Game Boy Advance version, unlockable via completing the game on Easy.

Identity Cr-Ice-Is
Sub-Zero's original design name was Tundra. NetherRealm Studios would later recycle this name as the younger Sub-Zero's original codename prior to adopting his brother's mantle.Kori Powers
The ice powers that the Sub-Zeros and Frost command stem from an ancient people that once lived deep within Outworld. The younger Sub-Zero stumbled upon their ruins while searching for an appropriate burial ground for Frost. Its unknown if this plot point continues in the reboot.The Lin Kuei
A secret clan of warriors founded somewhere deep within China. Lin Kuei's true origins are unknown, but it has been host to countless notorious assasins for centuries. The younger Sub Zero is the current Lin Kuei grandmaster, and in lieu of their villianous history, he has pledged his and the entire clans allegiance to Raiden and Earthrealm.